Railway truck



R. H. SPENCER 2,516,082

RAILWAY TRUCK Filed July 26, 1947 July 18, 195o Patented July 18, 1950 PATE NT OFFICE RALAWAY TRUCK haben 11..'speneer, Melrose 12a-1on1.

,animation runes, 1947, serial No. '163,946

theabolsterandftheasideirramesfwliichinfclude vopy posed `compression coll springs :iror 'femciently fabsorbing shocks.

Another object tof *the invention vis tto provide :supplemental fshocksabsorbing .devices `of 'this type, which are simple @construction efllcient in' absorbing vibration ,and shockfland are .readily Yaccessible:forinstaliationandabpair.

Other objects of the inventionfwill appear from the detailed description. .v

The invention consists 1n the several novelfeaglower spring, all disposed at `the .router side .of one pending ears '21 of a fork .bracket `28 which'is tures hereinafterset forth, fand'more particularly i defined by claims :at the fnorrcluslonhereof.

In the drawings:

Fig. 1 is a transverse esection ,oa-railway truck embodying the invention;

Fig. `2 is a vertical transversesection vthrough one o *the supplemental fshuckeabsorbing. .devlces;

Fig. "3 is Ia section A"taken on line 13-3 .of Fig. i2, parts `being shownin elevation; I:and y "Fig 4 is ajperspe'ctive iof one `end of the bolster and the abutment kplate for the shock-absorbing 'spr-ings.

"The :invention exemplified in ra railway car truck which comprises :side tmmes 6,'wheels l on axles extending into ,journal boxes vertically slidablelin .the side frames, fra .bolster 9 .on which t'he ycar body is pivotally sustained andawhlch is mounted for vertical .sliding .incitement `in the side frames, and is supported on cushion springs Ill which are carried by a spring plank I I, which extends between the side frames 6. All of these parts may be of usual or standard construction, as well understood in the art.

Two (2) supplemental shock absorbing devices of like construction are provided at the outer sides of the side frames respectively and between the outer ends of the bolster and the side frames. Each of these shock absorbing devices comprises a vertically aligned pair of upper and lower opposed compressi-on springs I2 and I3, an abutment, generally designated 20, Abetween the contiguous end of the opposed springs, which is rigid lwith the bolster, an abutment, generally I'at designated 2l, pivotally suspended froma side secured by ibolts 29 to a lug 30 secured to and projecting transversely from bolster 9. .An elasticsleeve `3'I around .pin 26 extends'through ear :'25 yon head 24 4and ears .21 on bracket 28.

vilbu'tment :'22 is in the :form of ahead :32 fon which :the lower Vendof vlower spring AI3 is seated'. -Astem133 'has its upper end fixedly secured in head 24 `a'ndhead'32 is screw threaded to *the Alower -end of said stern `for vertical .adjustment of'abutmenti22. Y

hbutmentmfis formed of a plate of metal 35 which Iilts between `lugs x36 in the 'fork Yend of the :bolster i and Ahas integral .downturned flanges 311=Which are `'se-cured in the -forked ends :of :the bolster by bolts 38. Plate `.35 is .provided Withfan enlarged Iopening Jall through which stem 33 -extends ffreely to` permit lateral Aor angular movenient vof said stemrelatively to said plate. A Wear plate Ml is interposed .between the lower end of -upperspring I2 and the upper face of plate 35 and a wear plate 4I is interposed -between the lower liace Vof plate 35 andthe upper end of-spr-ing I3.

.Tlfn operation, the plates 35 .which 'form abutments T20 on the ends :of the bolster 9, are yieldingly Lheld uA.between `the opposed springs .122 and I3, both of which are normally under compression so that both relative up and down movements between the bolster and the side frames will be yieldingly resisted. The lower springs I3 are normally under compression and carry some of the load from the bolster which is also supported on the main cushion springs Ill. Lower springs I 3 absorb some of the shock produced on the wheels, by the rails. The upper springs I2 yieldingly resist the rebound movements of the bolster. The combined action of the upper and lower springs I2, I3, breaks up any harmonic action in the bolster spring and eiciently prevents shocks in the railway truck. The pivotal connections between brackets 28 on the side frame and the upper heads 24 permit relative lateral motion between the bolster and the side frames, and stem or rod 33 is free to move laterally in the hole 39 in the abutment plate. 'I'his permits the springs I2 and I3 to be flexed transversely between their ends for the relative lateral or swaying movement between the bolster and the side frames.

The auxiliary cushioning devices described, are readily accessible for installation on the truck. The heads 32 are accessible for adjustment on stem or rod '33, for varying the normal compression of springs I3. The construction is simple and is adapted for application for rail-.

' 'frames of a railway car truck, respectively, each way trucks of standard construction.

The bracket 28 is detachable from the side frame and plate 35 is detachable fromthe bolster,

so that each supplemental shock-absorbing de" vice can be readily removed for repair and re-. Y

placement.

The invention is not to be understood as liment is:

1. A pair of shock absorber devices between the outer ends of a bolster and the side frames of va railway car truck, respectively, each of said devicesv comprising upper and lower vertically aligned and opposed compression coil springs, anabutment plate removably and rigidly secured to one of the outer ends of the bolster and in terposed between the contiguous ends of the upper and lower springs, an abutment for the lower spring, an upper abutment for the upper spring, a bracket secured to one of the side frames and to which the upper abutment for the upper springis pivotally connected for transverse movement, and a stem extending through the springs and the abutment plate and rigidly connected to the upper abutment for the upper spring and thel lower abutment for the lower spring, the abutment plate being provided with an opening for'lateral or angular movement of the stern responsive' to relative transverse movement of the bolster and the side frames.

-2. A `pair of shock absorber devices between the-outer vforked ends of a bolster and the side frames of a railway car truck, respectively, Aeach of said devices comprising upper and lower-'Vertically aligned and opposed compression coil springs, an abutment plate removably and rigidly secured in one of the forked outer ends of the bolster and interposed between the contiguous ends of the upper and lower springs, an abutment for the lower spring, an upper abutment for the upper spring, a bracket secured to one of the side frames to which the upper abutment for the upper spring is pivotally connected for transverse movement, and a stem extending through the springs and the abutment plate and rigidly connected to the upper abutment for the upper spring and the lower abutment for the lower spring, the abutment plate being provided with an opening for lateral or angular move- ...merli ...Qi the .Si-tem fesponsiyeo, relative transtev'erse movement-bf thl jbo'lste'r and` 'side frames.

r 3. Awp'air of "shock absorber devicesV between .the outer forked ends of a bolster and the side .of'gsaid devices comprising upper and lower vertically aligned and opposed compression coil """spri'ngs, anabutment plate removably and rigidlysecured-fin. one of the forked outer ends of the bolster andI interposed between the contiguf ous-ends of the upper and lower springs, an

abutment for the lower spring, an upper abutment for-the upper spring, a bracketremovably securedmtoone ofthe side frames, fand to-which the upperabutment for the upperspring-is' pivotally connected for .transverse movement, and af'stem. extendingl through the springs and the abutment plate vand .rigidly connected'sto the upper abutmentfor the 4upper spring andthe lower abutment vfor the lower spring; the abutment plate being provided with an opening for-lateral or'angular .movement-fof the stem responsive to relative transversemovement of the bolster and the vside/frames, each device being unitarily removable from thetruckby disconnection 'of the abutment platev from the bolster and the bracket from the side'frames; 1 ROBERT- H. SPENCER.

','REFsaECEs CITED The ."following' references' are of record in vthe le of this patent: l

UNiTED'sTA'rEs PrrrizN'rsv I Number l Nam yDra-te'` 1,329,9 93.,` `Newton Feb. 3, 1920 1,501,382 Whisler July 15, 1924 1,682,7:86-7-W4 Harris Sept. 4, 1928 2,237,319 Snyder.l Apr. 8, 1941 .2,309,265 Travilla Jan. 26, 1943 v.2,347,500 Parke Apr. 25, 1944 2,379,005 Jackson et al June 26, 1945 2,424,625,... ..Nystrom et al July 29, 1947 lFOREIGN PATENTS v' jountrylDate 5,262 GreatBritain A Mar. 2, 1907 m1906- jereatBritai`n` Dec. 24, 1920 

